气候变化领域集成服务门户(CCPortal): The importance of neutral over niche processes in structuring Ediacaran early animal communities

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DOI	10.1111/ele.13383
	The importance of neutral over niche processes in structuring Ediacaran early animal communities
	Mitchell E.G.; Harris S.; Kenchington C.G.; Vixseboxse P.; Roberts L.; Clark C.; Dennis A.; Liu A.G.; Wilby P.R.
发表日期	2019
ISSN	1461023X
卷号	22 期号:12
英文摘要	The relative influence of niche vs. neutral processes in ecosystem dynamics is an on-going debate, but the extent to which they structured the earliest animal communities is unknown. Some of the oldest known metazoan-dominated paleocommunities occur in Ediacaran age (~ 565 million years old) strata in Newfoundland, Canada and Charnwood Forest, UK. These comprise large and diverse populations of sessile organisms that are amenable to spatial point process analyses, enabling inference of the most likely underlying niche or neutral processes governing community structure. We mapped seven Ediacaran paleocommunities using LiDAR, photogrammetry and a laser line probe. We found that neutral processes dominate these paleocommunities, with niche processes exerting limited influence, in contrast with the niche-dominated dynamics of modern marine ecosystems. The dominance of neutral processes suggests that early metazoan diversification may not have been driven by systematic adaptations to the local environment, but instead may have resulted from stochastic demographic differences. © 2019 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd
英文关键词	Ecology; Ediacaran; neutral theory; paleoecology; paleontology; spatial point process analysis
语种	英语
scopus关键词	Animalia; Metazoa; animal; Canada; ecosystem; forest; Animals; Canada; Ecosystem; Forests
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121005
作者单位	Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom; British Geological Survey, Nicker Hill, Keyworth, Nottingham, NG12 5GG, United Kingdom; School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol, BS8 1RJ, United Kingdom; Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, United Kingdom; School of Geography, Geology & the Environment, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom
推荐引用方式 GB/T 7714	Mitchell E.G.,Harris S.,Kenchington C.G.,et al. The importance of neutral over niche processes in structuring Ediacaran early animal communities[J],2019,22(12).
APA	Mitchell E.G..,Harris S..,Kenchington C.G..,Vixseboxse P..,Roberts L..,...&Wilby P.R..(2019).The importance of neutral over niche processes in structuring Ediacaran early animal communities.Ecology Letters,22(12).
MLA	Mitchell E.G.,et al."The importance of neutral over niche processes in structuring Ediacaran early animal communities".Ecology Letters 22.12(2019).